摘要
为了明确班氏跳小蜂不同生殖方式及雌蜂密度对种群的影响,研究了班氏跳小蜂在不同雌雄比例的两性生殖和孤雌生殖条件下以及不同雌蜂密度情况时,其寄生率及子代的雌性比例。结果表明:班氏跳小蜂可进行两性生殖和产雄孤雌生殖,不同雌雄比例的两性生殖及孤雌生殖的寄生率随着雌蜂数量的增加不断升高,雌雄比为20∶1时的寄生率最高,为49.13%;在两性生殖雌雄比为15∶1的情况下,其后代雌性最高;不同粉蚧密度条件下,2头雌蜂同时存在时,其寄生率和子代性比均最高。说明两性生殖(雌雄比为15∶1)和2头雌蜂同时存在条件下,更利于班氏跳小蜂种群发展。
The effects of reproductive patterns and Aenasius bambawalei female adult density on the parasitization rate and offspring sex ratio were determined in the laboratory. The results indicated that the reproductive model of A. bambawalei included bisexual reproduction and arrhenotoky. Meanwhile,the parasitization rate of A. bambawalei increased with the increase of parasitic wasp density and peaked（ 49. 13 %） with 20 ∶ 1 female to male ratio. The offspring female ratio peaked with 15 ∶ 1 female to male ratio. Additionally, the parasitization rate and offspring female ratio were higer when two female A. bambawalei occurred at the same time. This study interpreted that bisexual reproduction and two female parasitic wasps occurred at the same time were more beneficial for the population development of A. bambawalei.
出处
《环境昆虫学报》
CSCD
北大核心
2016年第4期742-747,共6页
Journal of Environmental Entomology
基金
农业部公益性行业科研专项(201103026)
浙江省自然科学基金(LQ14C140004,LQ16C140004)
杭州市农业科研攻关专项(20150432B36)
关键词
班氏跳小蜂
生殖方式
寄生率
子代性比
Aenasius bambawalei
reproductive patterns
parasitization rate
offspring sex ratio
